20707701

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{51899}}^1$

素因数の和:51928

約数の個数: 16

約数和(自身を含む): 33216000

約数和(自身を除く): 12508299

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 51899, 155697, 363293, 986081, 1089879, 2958243, 6902567, 20707701]

約数ペア:

[(1, 20707701), (3, 6902567), (7, 2958243), (19, 1089879), (21, 986081), (57, 363293), (133, 155697), (399, 51899)]